Tractor lister cultivator



July 13, 1937- w. S. GRAHAM v TRACTOR LISTER CULTIVATOR 2 Sheets-Sheet l Filed NOV. 2.9, 1935 KNSM, n @w B, mw. QQ @w ww wmmwhw o @E mw QW F. mhwwwn www@ www @i www o C uw. www Mw mw m www@ H NW, mw @n ww. f i Sw um@ Nw @mm Q Q m QQ N ww QQ m@ NQQQQ@ uw Q @m w ww ww, m Ihm, www o o NNN' @MJ @me uw@ @NM MRW @bf @WNW o o o. www @mW/ .@W/ @.0 xox uw b ww mwwwwwwmm, @Q NWA, n, @M @bf Sw. www @EN July 13, 1937. w. s. GRAHAM 2,086,797

TRACTOR LISTER CULTIVATOR yFiled Nov. 29, 1935 2 Shee'f,s'-Sheel 2 Patented July 13,v 1937 UNiTEo sri-tr 2,086,797 'rnAoron erstma oULrivA'ron William S. Graham,

Canton, Ill.,assignor to International Harvester Company, a corporation of NewV Jersey Application November 29, 1,935, Serial No. 52,134

' 29 Ciaims.

This invention relates to lister cultivators of the multiple unit type adapted to be drawn by tractors.

The principal object of the invention is to provide a tractor drawn multiple unit lister cultivator in which the several lister units will be free to follow the furrows or ridges on which they are respectively working and which are so connected to each other and to a common draft frame as to remain in upright position and in parallel relation to each other and to the line of travel of the oultivator as 'a whole as they shift laterally to follow deviations in the furrows.

Another object of the invention is to so construct the frame of the cultivator that the several units are held in level or stable relationship to each other and to so construct the frame andv position the lister cultivator units that clearance is provided so that upon lateral shifting of each unit, the units will not interfere with each other.

Other objects and advantages will appear in the following description of a preferred embodiment of the invention, as illustrated in the accompanying drawings, wherein:

Figure l. is a plan view of the lister cultivator showing the frame construction and trailing from a tractor draw-bar; and, j

Figure 2 is a side View of the tractor lister cultivator.

As herein disclosed the cultivator embodying the invention has a draft frame comprising an elongated transverse bar I9 to which forwardly extending, converging, hitch bars II and a central hitch bar I2 are pivotally connected on horizontal pivots as at I3. The connected ends of the hitch bar are secured to the usual draft member I4. Adjustably connected to the draft member I4 is a clevs I5 for connecting the lister cultiva'tor to the draw-bar lli of the tractor. The rear ends of the hitch bars I I and I2 are pivotally connected at i3d on the horizontal axis of pivots I3 to Vthe draft connecting members II which are secured to the transverse member Ii). This fiexible connection at I3 allows the hitch bars II and I2 and the transverse bar I9 of the lister cultivator frame to have relative vertical movement to each other. Secured to the transverse frame member IU is the frame member I8. The frame member I8 has rearwardly and outwardly diverging members VI9 and 20 which also extend upwardly fromv the frame member I0. A transversely extending portion 2l of the frame I8 is formed integral with the diverging .members I9 and 20. The member 2I has two off-set portions 22 and 23. The members 22 and 23 are off- (oi. sav-ira) set longitudinally, but lie in the same horizontal plane. The member I8 is preferably in the form of a cylindrical bar.

Pivotally connected to the transverse member it) are the main draft tongues 24 and 25 of the lister cultivator attachments 26 and 2l respectively. The construction of these lister cultivator units is preferably similar to the cultivator units disclosed in the patent to Olson 1,967,321, granted July 24, 1934. The main draft tongues 24 and are pivotally connected to the transverse frame member i9 at 2t and 29 by the draft pin and clevis portion of the draft tongues. The draft tongues 24 and 25 may be adjusted laterally on the transverse frame member Iii by means of the adjusting,

holes 23 and 29. Each lister cultivator unit 2. and 'i is of conventional type comprising a frame it formed with a forwardly bowed portion 3i and supported on a pair of furrow guide wheels 32. The usual soil engaging elements such as the disks 33 are located rearwardly of the furrow wheels. Each of these outwardly or Ylaterally disposed cultivator units 26 and 2 are connected to the transverse member I9 by the main draft tongues 24 and 25 pivoted at 34 and 35 to the frames 39 respectively of the units 26 and 2l, and these cultivator units are similarly pivoted at 28 and 29 to the transverse member Il). As each of the cultivator units 2t and 2l are similar, like reference characters will denote similar parts. o

The soil engaging elements 33 have various adjustments as at Se and 31 for adjusting the angle of out of the disk. The draw links 35 for the standards of the furrow guide wheels are adjustably connected at their forward ends to f.

brackets 3l secured to the arched portion 3l of the cultivator frames 3?. Rear supporting members 38 are secured to the rear ends of the cultivator frames 39. A transversely extending stiifening member 39 is secured 38 by the clamp member 49. The Wheels and the standards therefore, are secured to the transverse member 39 by the clamp brackets 4I. Ad-

justably. mounted on the rear portions of the bracket'mernbers 39 is a transversely extending rockshaft 42. Adjusting brackets 43 are adjustably mounted laterally on the rockshaft 42. The shovel arms 44 are pivotally mounted for horizontal movement at 45 in the adjusting brackets 43 and are adjusted at 46 by means of serrated washers and arcuate bracket 43. Secured to the shovel arms are the shovel arm brackets 4l in which the Shanks 48 of the cultivator shovels 49 are adjustably mounted. The

rearwardly extending supports 5i] are Pivoted at to the members 5I to the supporting bracket 38 and are held in adjusted position by the arcuate adjusting member 52 which is a continuation of the supporting bracket 38. The disks 33 and their disk arms complete'with the disk bearings are adjustably mounted for vertical movement on the support 5i) and are adjustably secured as at 35. The disk arms are adjusted horizontally as at 3i. The disk support members 5e are arcuately adjusted in horizontal position by means of the arcuate slot 52 and are held in adjusted position by the serrated clamping means at 53.

In order to adjust the cultivator shovels 49 a quadrant member 54 is secured to a supporting bracket 55 secured to the transverse member 42. A lifting lever 56 is pivoted to the quadrant member 54 and is held in adjusted position by Vthe usual detent and teeth'. A lifting link 5'! is pivotally connected to the lever 56 and to a crank arm 58 secured to the rockshaft e2. 'Ihe usual spring pressure may be applied to the shovel arms by the `spring 59 on the link 5l.

In order to stabilize or hold each cultivator unit 26 and 27 in horizontal alignment supporting brackets 6@ are secured to each side of the frame 3B, as best shown in Figure 2. The brackets 62 are U-shaped and have upper and lower spaced roller members 63E and o2 journaled thereon. Spaced between the roller members ill and 52 are the horizontal portions 22 and 23 of the frame or stabilizing member' l, and the portions 22 and 23 may be considered as forming a plurality of means for stabilizing the cultivator units 26 and 27 of the lister cultivator. It is thus seen that the cultivator units 26 and 2l are free to move transversely on the stabilizing or gang engaging portions 22 and 23 of the frame member E8. Each cultivator unit is limited in its horizontal movement by the longitudinal member 2l connecting the transverse portions 22 and 23 in their innermost position and are limited in their outermost position by the longitudinally extending portions 22' and 23 of the frame member I8. The arcuate portions 3l of the cultivator units 26 and 2l are secured to the draft tongues 24 and.Y

25 respectively by the guide loop 3. With this connection the lister units 2@ and 2 will follow the vertical movement of the main lister frame formed by the transverse frame member Il), and the frame member i8.

The draft tongue 25 is longer than the draft tongue 2&3 between the pivot point 29v and the guide loop E53 of the cultivator unit 2 as Compared to the distance between the pivot point 28 and the guide loop 63 of the cultivator unit 25. This distance is equivalent to the amount of longitudinal olf-set of the portions 22 and 23 of the transverse member 2l.

This off-set is used to allow the cultivator units 2E and 2l to have horizontal movement and still not have any of the ground engaging parts on one unit interfering with the ground engaging parts of another unit. In laterally spaced relation to the draft tongues 24 and 25, respectively, each cultivator unit 2t and 2l' is provided with an auxiliary draft link te and 65 respectively. Each draft link is adjustably mounted' at its forward end on the transverse member il) and at its rear end it is pivotally connected to the frame member 3b. t is thus seen that a parallel draft link connection is thus established between each of the cultivator units and the draft members. The pivot point Sli and a pivot point 66 of the cultivator unit 2E and the pivot point 35 and the pivot point 6l form the pivotal connections of the parallel draft link connection formed by the draft tongues 24 and the draft link @il and the draft tongue 25 and the auxiliary draft link 65 respectively. The draft tongues 2d and 25 are pivotally connected at 3d and 35 respectively by the draft connection t8 which is secured to the transverse frame member Whenever adjustment is necessary for different row widths the parallel auxiliary draft links 64 and 55 must be moved in and out accordingly so as to keep the rods parallel with their respective draft links.

With the connnections thus described it is thus seen that each cultivator unit 2@ and 2l may freely move horizontally on the transverse portions 22 and 23 respectively because of the parallel draft connection previously described.

Any longitudinal movement that is necessary because of the shortening of the longitudinal distance because of the swinging of the draft connections 24 and 25 is taken care of by the length of the slot formed between the rollers Ei and 62, the length of the slot being governed by the width of the U-shaped supporting brackets te. Because of the upper and lower rollers 6i and S2, the cultivator units 2&5 and 2 are free to swing laterally in either direction as well as to move longitudinally therebetween. The above manner of mounting the cultivator units 255 and 27 permits the units to have limited lateral movement while at the same time maintaining the units in a stable or upright position at all times.

The soil engaging tools of both units may be raised .and lowered in unison by the movement of the forwardly extending lifting lever 69 which is pivotally mounted to an upwardly and rearwardly extending member 'i9 secured to the central hitch bar l2. The supporting member lil is securely braced by the members Til connecting the supporting member l@ to the side hitch bars. At the rear end of the supporting member l!! is secured an adjusting quadrant l2 about which the lifting lever 5S is adjusted and latched in adjusted position by the usual detent. A lifting arm 'i3 is secured to the lifting lever 89. Pivoted link 'ifi connects the lifting arm "i3 to a rearwardly extending bracket member l5 rigidly secured to the transwersely extending frame member l0.

It is thus seen that as the `front hitch connection of the lister cultivator is secured to the draw-bar l@ that when the lifting lever 69 is pushed downwardly the link 'M is moved downwardly causing the hitch frame and the implement frame to pivot at its axis at lZ causing the implement frame I8 to swing downwardly and pivot about the axes of the furrow guide wheels 32 of the cultivator units 25 and 2, respectively. The axes of the furrow guide wheels 32 of the cultivator units 26 and 2l are not in` alignment, the axis of one being advanced about the axis of the other, and whatever movement is necessary relative between the implement frame i8 and the cultivator units 25 and 2l may be provided for in the longitudinal slot between the rollers 6l and 62 of each unit. As the cultivator gangs are raised, the front left hand corner of the implement frame drifts a little faster than the right hand corner of the frame, and as a result is somewhat lower than the other corner when the gangs are raised for transport. The longitudinal slots are also provided to accommodate the lateral swinging action of the as they swing from one side tothe other. As the 'forward portion of the implement frame i8 'frame pivotally connectedito the draftfrarne for lrelative movement,A said implement frame ccmmoves downwardly the rear portions of the frame to which the implement tools are connected are raised simultaneously from theg'round. Likewise when the lifting lever E9 is raised the forward portion of the implement frame i8 will be raised allowing the rear portion to move downwardly about the axis of the furrow guide wheels carrying the ground engaging tools therewith into a ground engaging position. VAs hasbeen previously disclosed the cultivator shovels i3 f may be adjusted separately vby means ofxthe `means of the adjusting connection @6.

to help regulate the 4relative vertical movement,

56 and the soil engaging disk adjusted by means of the es, 3l and. 53. Also, be adjusted laterally by Adjust.- ing holes are also provided inthe raising link it lift of the gangs.. When the :links vare connected in the lower holeas shown in Figure 2, the amount of the lift is decreased but greater depth is obtained, as the middle or top hole, the height of the lift is increased but less depth can be obtained. Y

The foregoing structure provides a simple, strong and efficient multiple ro-W lister cultivator in which each unit is capable of independent lateral movement on substantially straight lines without departing from parallel relation to each other and to the direction of travel, the cultivator `as a whole being particularly Well adapted for free trailing movement and operation behind a tractor.

Modifications in the preferred structure disclosed, of course, may be made without departing from the scope of the invention as defined in the following claims.

What is claimed is:

l. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative vertical movement, said cultivator gangs pivotally connected to said implement frame for lateral movement, and means rigidly connected adjusting lever 12` may be similarly adjusting connections shovel arms M may to the implement frame for stabilizing the cultivator gangs.

2. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for said implement frame comprising a transversely extending ldraft member, and means rigidlysecured to said transversely extending draft member for stabilizing the cultivator gangs.

3. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative vertical movement, said cultivator gangs pivotally connected to said implement frame for lateral movement, means for lifting and lowering said cultivator gangs in unison, and means rigidly connected to the implement frame for stabilizing the cultivator gangs.

4. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative vertical movement, said cultivator gangs pivotally connected to said implement frame for lateral movement, the aforesaid cultivator gangs being off-set with respect to each other longitudinally, and means connected to the implement frame and having gang engaging portions off-set with respect to each other longitudinally for stabilizing ,the cultivator gangs.

5. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement fcultivatorf' gangs, va draft "frame'piv'otally connected to the relative.r vertical -means connected to the implement frame for stagangs,

`frame pivotally connected prising a transversely extending draft member,

landmeans: connected to the implement frame portions off-set with 1 'respect yto each other longitudinally for stabilizing jthe cultivator gangs; Y.

and'xhaving gang 'engaging 6. Aflister cultivator comprising a plurality of 1 frame, an .implement draft frame for movement, and stabilizing bilizingthe" cultivator gangs, said ystabilizing means comprisingsubstantially parallel members Aext-ending transversely of the cultivator gangs..

and rigidly connected tothe implement frame. 7. Azlister cultivator comprising a plurality of 'cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative vertical movement, and stabilizing means rigidlyconnected to the implement frame for stabilizing the cultivator gangs, said stabilizing means comprising parallel members extending transversely of the cultivator gangs and longitudinally off-set with respect Vto each other.

8. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement -framepivotally connected to the draft frame for relativevertical movement, said cultivator gangs pivotally connected to said implement frame for lateral movement, and means connected to the said stabilizing means extending members to the implement frame.

9. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement to the draft frame for relative vertical movement, said cultivator gangs pivotally connected tosaid implement frame for lateral movement,'means rigidly connected to the implement frame for stabilizing the cultivator; gangs, and means on the stabilizing means i Yfor limiting the lateral movement of said culti- -vator gangs.

10. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame, said cultivator gangs pivotally connected -to said implement frame for lateral movement,

vmeans comprising parallel nally spaced for stabilizing the cultivator gangs,

`members longitudiand means connected to the aforesaid members and laterally spaced thereon for limiting the lateral movement of said cultivator gangs.

11. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement yframe, said cultivator gangs pivotally connected to said implement frame for lateral movement, means comprising parallel members longitudinally spaced for stabilizing the cultivator gangs, and longitudinally extending members connected to the aforesaid members and laterally spaced Vthereon for limiting the lateral movement of said cultivator gangs.

12. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame, said cultivator gangs pivotally connected to said implement frame for lateral movement, means comprising parallel members longitudinally spaced for stabilizing the cultivator gangs, a member integral with the stabilizing members Vimplement frame for stabilizing the cultivator comprising transt vvversely extending members lying in the same horiz'ontal plane, and rearwardly and upwardly ex- ,tending members connecting said transversely and connecting their inner ends, and longitudinally extending members integral with the stabilizing members and connected to their outer ends, whereby the lateral movement of said cultivator gangs will be limited.

13. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative vertical movement, parallel Vdraft links pivotally connecting said cultivator gangs to said implement frame, whereby said cultivator gangs may move laterally relative to the implement frame and to each other, means rigidly connected to the implement frame for stabilizing the cultivator gangs, and guide means on said cultivator gangs connected to said stabilizing means whereby said cultivator gangs will be held in horizontal alignment. Y

14. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative movement, said cultivator gangs longitudinally off-set with respect to each other, parallel draft links pivotally connecting said cultivator gangs to said implement frame whereby said cultivatorV gangs may move relative to each other, means connected to the implement frame for stabilizing the cultivator gangs, and guide means on said cultivator gangs connected to said stabilizing means for allowing longitudinal movement of said cultivator gangs with respect to said stabilizing means.

15. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative movement, parallel draft links pivotally connecting said cultivator gangs to said implement frame vwhereby said cultivator gangs may move relative to each other, means rigidly connected to the implement frame for stabilizing the cultivator gangs, guide means on said cultivator gangs connected to said stabilizing means, and means on said parallel draft links for limiting the vertical movement of said cultivator gangs.

16. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative movement, parallel draft links pivotally connecting said cultivator gangs to said implement frame whereby said cultivator gangs may move relative to each other, means rigidly connected to the implement frame for stabilizing the cultivator gangs, guide Vmeans on said cultivator gangs connected to saidstabilizing means, and means connecting said parallel draft links and said cultivator gangs whereby said cultivator gan-gs may move relative to said parallel draft links.

17. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement .frame pivotally connected to the draft :frame for relative movement, said cultivator gangs connected to said implement frame, transporting `means for said cultivator gangs, means rigidly .relative movement, said cultivator gangs oonnected to said implement frame and longitudinal- .ly oil-set with respect to each other, transporting means for 'said cultivator gangs, means connected to said implement frame for stabilizing Ithe cultivator gangs comprising transverse members interconnected and longitudinally oif-set with respect Vto each other, and means for adjusting the implement frame, whereby the cultivator gangs will be adjusted vertically relative to the transporting means for raising and lowering the cultivator gangs simultaneously.

19. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative movement, said cultivator gangs connected to said implement frame and longitudinally olf-set with respect to each other, transporting means for said cultivator gangs, means connected to said implement frame for stabilizing the cultivator gangs comprising transverse members interconnected and longitudinally off-set with respect to each other, means for adjusting the implement frame, whereby the cultivator gangs will be adjusted vertically relative to the transporting means for raising and lowering the cultivator gangs simultaneously, and guide means connecting said cultivator gangs to the transverse stabilizing members whereby the cultivator gangs will be held in horizontal alignment.

20. A lister cultivator comprising a plurality of cultivator gangs, a draft frame, an implement frame pivotally connected to the draft frame for relative movement, said cultivator gangs connected to said implement frame and longitudinally olf-set with respect to Aeach other, transporting means for said cultivator gangs, means connected to said implement frame for stabilizing the cultivator gangs comprising transverse members longitudinally off-set with respect to each other, means for adjusting the implement frame whereby the cultivator gangs will be adjusted vertically relative to the Ytransporting means for Yraising and lowering the cultivator gangs simultaneously, and means connecting the cultivator gangs to the stabilizing members, whereby the cultivator gangs will move longitudinally relative to the stabilizing members.

WILLIAM S. GRAHAM. 

